Detergent composition as well as preparation method and application thereof

Abstract

The invention discloses a detergent composition as well as a preparation method and application thereof. The detergent composition is prepared from polyisobutene amine, polyether amine and 3-amino methyl tetrahydrofuran. The polyisobutene amine, the polyether amine and the 3-aminomethyltetrahydrofuran are compounded to serve as a main agent of the detergent, the effects of removing carbon deposits and reducing deposits can be achieved under the condition of very small dosage, oil consumption can be reduced, particulate matter emission can be reduced, and the purposes of energy conservation and emission reduction are achieved; and a good effect on improving the performance of the engine is also achieved.

Description

Technical Field

[0001] This invention relates to the field of fuel technology, specifically to a detergent composition, its preparation method, and its application. Background Technology

[0002] In recent years, with the rapid development of the automobile industry, the number of cars in my country has increased rapidly. While cars bring convenience to people's production and life, the consumption of fossil fuels and the emission of pollutants in exhaust gases have led to increasingly serious problems of continuous deterioration of the global environment.

[0003] After prolonged operation, carbon deposits accumulate in the fuel, intake, and combustion systems of a car engine, posing a serious threat to its normal operation. These deposits increase fuel consumption, conventional air emissions, and particulate matter emissions. Adding fuel detergent to the fuel is one of the fastest and most effective measures to inhibit and remove engine deposits, extend the engine's design life, and improve vehicle emissions.

[0004] Fuel cleaner is a compound additive with cleaning, dispersing, antioxidant and rust-preventing functions. It belongs to surface-active substances and is generally composed of a main agent, solvent and carrier oil, with the main agent playing the leading role. Fuel detergents have evolved through five generations to date: In the 1950s and 60s, American oil companies developed a nitrogen-containing low-molecular-weight surfactant, known as the first generation of detergents; in the 1970s, fuel injection engines gradually replaced carburetor engines, and carbon deposits weakened the electronic control system's control over fuel regulation. People used polyetheramines and polyisobutyleneamines with a relative molecular weight of 300-500 to control carbon deposits on fuel injectors, known as the second generation of detergents; in the late 1980s, American oil companies developed intake valve deposit detergents—a composite fuel additive that integrates cleaning, dispersing, and antioxidant functions, i.e., the third generation of gasoline detergents; after the 1990s, people began to develop a new generation of gasoline detergents—the fourth generation of gasoline detergents—that have good cleaning functions for both fuel injectors and intake valves; currently, people are working on developing the fifth generation of detergents—detergents that can effectively clean deposits on fuel injectors, intake valves, and combustion chambers simultaneously. Based on this, this invention aims to provide a new type of detergent that can effectively clean injectors, intake valves, and combustion chambers simultaneously. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a detergent composition, its preparation method, and its application. The novel detergent composition of this invention, targeting the different characteristics of fuel injector deposits, combustion chamber deposits, and intake valve deposits, uses polyisobutyleneamine, polyetheramine, and 3-aminomethyltetrahydrofuran in a certain proportion as the main detergent agent, with added additives to further enhance the detergent performance. This detergent composition was mixed with reference oil in different proportions and applied to both PFI and GDI engines. Experimental measurements were conducted on the physicochemical properties of the oil, the reduction rate of intake valve deposits, fuel injector deposits, and combustion chamber deposits, fuel consumption per 100 kilometers, and particulate matter emissions. The results showed that this detergent composition has excellent effects in reducing fuel consumption, removing deposits, and reducing pollutant emissions.

[0006] One object of the present invention is to provide a detergent composition comprising polyisobutyleneamine, polyetheramine and 3-aminomethyltetrahydrofuran.

[0007] In a preferred embodiment of the present invention,

[0008] The number average molecular weight of the polyisobutyleneamine is 500-50000, preferably 500-20000, and more preferably 500-2000.

[0009] In a preferred embodiment of the present invention,

[0010] The structural formula of the polyetheramine is as follows:

[0011]

[0012] Wherein, R is methyl or ethyl, x is 2-50, preferably 10-25, and y is 0-50, preferably 1-6; preferably, the polyetheramine described in this invention is selected from Huntsman Corporation. A series of polyetheramine products.

[0013] In a preferred embodiment of the present invention,

[0014] The structural formula of the 3-aminomethyltetrahydrofuran is:

[0015]

[0016] In a preferred embodiment of the present invention,

[0017] Based on parts by weight, the amount of polyetheramine is 100-300 parts by weight relative to 100 parts by weight of polyisobutyleneamine, and the amount of 3-aminomethyltetrahydrofuran is 75-300 parts by weight; preferably, based on parts by weight, the amount of polyetheramine is 100-200 parts by weight relative to 100 parts by weight of polyisobutyleneamine, and the amount of 3-aminomethyltetrahydrofuran is 75-150 parts by weight.

[0018] In a preferred embodiment of the present invention,

[0019] The detergent composition further comprises at least one of the following: polyether carrier oil, solvent oil, cosolvent, octane improver, rust inhibitor, corrosion inhibitor, demulsifier, friction modifier, and combustion improver. The polyether carrier oil and solvent oil enhance the system's fluidity and dispersibility; the cosolvent promotes the dissolution of each component into a single phase, improving the system's stability; the octane improver primarily increases the octane number of gasoline, effectively improving combustion efficiency and anti-knock performance, making the engine more stable, and ensuring more complete fuel combustion, thus reducing combustion residues and carbon emissions to a certain extent, lowering exhaust emission concentrations, and reducing environmental pollution; the rust inhibitor and corrosion inhibitor reduce the corrosion of non-ferrous metals and alloy parts inside the engine by gasoline and detergent components, preventing rust on ferrous metal parts; the demulsifier reduces detergent viscosity, preventing blockage; the friction modifier forms a lubricating film, reducing frictional resistance and wear, achieving fuel savings; and the combustion improver improves gasoline combustion performance, making combustion more complete, thereby reducing pollutant emissions.

[0020] In a preferred embodiment of the present invention,

[0021] The polyether-carrying oil is selected from at least one of polypropylene oxide, polybutene oxide, and copolymers of butene oxide and propylene oxide; preferably, the polyether-carrying oil has a molecular weight of 800-1200; and / or,

[0022] The solvent oil is selected from at least one of gasoline and aromatics, preferably from at least one of gasoline and alkylbenzenes, and more preferably from at least one of gasoline, toluene, xylene, trimethylbenzene, and tetramethylbenzene; and / or,

[0023] The co-solvent is selected from at least one of aromatic hydrocarbons and alkyl alcohols, preferably from at least one of benzene, alkylbenzene, ethanol, propanol, butanol, and isooctanol, more preferably from at least one of benzene, toluene, xylene, ethanol, propanol, butanol, and isooctanol; and / or,

[0024] The octane number improver is selected from at least one of dimethyl carbonate, methyl furan, and diphenylamine; and / or,

[0025] The rust inhibitor is selected from at least one of the following: heptadecyl imidazoline alkenyl succinate (T703), 1,2,3-benzotriazole (T706), alkenyl succinate (T747), sorbitan monooleate (Spinol 80), and dehydrated sorbitan fatty acid ester (Spinol 85); and / or,

[0026] The preservative is selected from at least one of benzotriazole derivatives and thiadiazole derivatives, preferably from at least one of T551 and T561 preservatives; and / or

[0027] The demulsifier is selected from at least one of polyoxypropylene polyoxyethylene propylene glycol ether (SP169), BAKERT9310, and BAKERT9372; and / or,

[0028] The friction modifier is selected from any conventional friction modifier in the art, preferably Lubrizol UltraZol. TM ; and / or,

[0029] The combustion improver is selected from at least one metal oxide, preferably from at least one rare earth metal oxide, and more preferably CeO2. The CeO2 is CeO2 nanoparticles, with an average particle size preferably of 20-200 nm. Nanoparticles such as CeO2 have oxygen storage and release functions, acting as an oxygen buffer during fuel oxidation, providing sufficient oxygen for the conversion of CO and HC into CO2. This unique property helps reduce pollutant emissions.

[0030] In a preferred embodiment of the present invention,

[0031] Based on parts by weight, relative to 100 parts by weight of polyisobutyleneamine, the amount of the polyether-carrying oil is 5-300 parts by weight, the amount of the solvent oil is 5-200 parts by weight, the amount of the co-solvent is 5-200 parts by weight, the amount of the octane number improver is 1-50 parts by weight, the amount of the rust inhibitor is 1-30 parts by weight, the amount of the corrosion inhibitor is 1-20 parts by weight, the amount of the demulsifier is 1-15 parts by weight, the amount of the friction improver is 2-50 parts by weight, and the amount of the combustion improver is 1-30 parts by weight; preferably, based on... Based on parts by weight, relative to 100 parts by weight of polyisobutyleneamine, the amount of the polyether-carrying oil is 50-160 parts by weight, the amount of the solvent oil is 50-100 parts by weight, the amount of the co-solvent is 50-100 parts by weight, the amount of the octane number improver is 10-25 parts by weight, the amount of the rust inhibitor is 6-12 parts by weight, the amount of the corrosion inhibitor is 2.5-5 parts by weight, the amount of the demulsifier is 2.5-5 parts by weight, the amount of the friction improver is 15-30 parts by weight, and the amount of the combustion improver is 5-15 parts by weight.

[0032] A second objective of this invention is to provide a method for preparing a detergent composition according to one of the objectives of this invention, comprising the step of mixing components including polyisobutyleneamine, polyetheramine, 3-aminomethyltetrahydrofuran and optionally polyether carrier oil, solvent oil, cosolvent, octane number improver, rust inhibitor, corrosion inhibitor, demulsifier, friction improver, and combustion improver.

[0033] The present invention can adopt the following specific technical solutions:

[0034] Under conditions below 60°C, polyisobutyleneamine, polyetheramine, 3-aminomethyltetrahydrofuran, and optionally solvent oil, polyether carrier oil, cosolvent, octane number improver, rust inhibitor, corrosion inhibitor, demulsifier, combustion improver, and friction modifier are mixed according to the stated amounts and stirred until homogeneous.

[0035] A third objective of this invention is to provide the application of a detergent composition according to one objective of this invention or a detergent composition prepared by the method according to another objective of this invention in fuel oil.

[0036] In a preferred embodiment of the present invention,

[0037] The detergent composition is added to fuel at a ratio of 50-2000 ppm, preferably 200-600 ppm, more preferably 350-550 ppm, and even more preferably 400-500 ppm. Experimental studies have shown that the detergent composition of the present invention is most effective when added to fuel at a dosage of 200-600 ppm.

[0038] The detergent composition of this invention is not only effective in removing deposits from engine fuel injectors and intake valves, but also reduces the amount of deposits formed in the combustion chamber, piston top, and exhaust valves, making it a clean and highly efficient fifth-generation detergent. This invention innovatively uses a compound of polyisobutyleneamine, polyetheramine, and 3-aminomethyltetrahydrofuran as the main detergent agent. Even with very low dosage, it can effectively remove carbon deposits and reduce sediment buildup, while also reducing fuel consumption and particulate emissions, achieving energy conservation and emission reduction goals. It also has a positive effect on improving engine performance. The detergent composition of this invention is preferably added in the range of 200-600 ppm for optimal results in reducing particulate emissions.

[0039] Compared with existing technologies, the detergent composition provided by this invention can achieve a cleaning effect comparable to existing gasoline detergents at a much lower dosage, with low cost and high cleaning efficiency. The preparation method of the detergent composition provided by this invention is simple and mild, suitable for large-scale industrial production. Experimental results show that the detergent composition provided by this invention reduces intake valve deposits, combustion chamber deposits, and fuel injector deposits in PFI and GDI engines by over 96%. In PFI and GDI engines, under different speeds and loads, the addition of the detergent composition significantly reduces fuel consumption and particulate matter emissions per 100 kilometers compared to the reference fuel. Detailed Implementation

[0040] The present invention will now be described in detail with reference to specific embodiments. It should be noted that the following embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the content of the present invention are still within the scope of protection of the present invention.

[0041] Unless otherwise specified, the raw materials used in the embodiments and comparative examples of this invention are all disclosed in the prior art, such as those that can be directly purchased or prepared according to the preparation methods disclosed in the prior art.

[0042] The 3-aminomethyltetrahydrofuran used in the embodiments and comparative examples of this invention was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd. The polyisobutylene amine used was PIBA-1000 purchased from Xuzhou Yihuiyang New Material Co., Ltd., with a number average molecular weight of 1000. The polyether amine used was purchased from Huntsman Corporation, model [model number missing]. M-1000 uses polypropylene oxide as the carrier oil, purchased from Jiangsu Haian Petrochemical Plant (model PPG-1000). The solvent oil is toluene, the co-solvent is ethanol, the octane number improver is dimethyl carbonate, the rust inhibitor is sorbitol monooleate (Styrene 80), the corrosion inhibitor is T561, the demulsifier is polyoxypropylene polyoxyethylene propylene glycol ether (model SP169), the combustion improver is CeO2 nanoparticles (spherical, 20-50 nm in diameter), purchased from Shanghai Aladdin Biochemical Technology Co., Ltd., and the friction modifier is Lubrizol UltraZol. TM .

[0043] Example 1

[0044] The detergent composition is formulated as follows:

[0045] The weight parts of each component are:

[0046]

[0047] The above components were weighed according to their respective weight proportions, mixed at 25°C, and stirred evenly to obtain the detergent composition of Example 1. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. The physicochemical analysis data of the gasoline all met the requirements of GB17930-2006. The reduction rate of intake valve deposits in simulated automotive engines according to GB / T19230.5 was 96.0–98.9% in PFI engines and 96.0–98.7% in GDI engines. The reduction rate of combustion chamber deposits in PFI engines and GDI engines was 98.0–99.3% and 97.1–99.3%, respectively. The reduction rate of fuel injector deposits in simulated automotive engines according to GB / T19230.3 was 97.6–98.8% in PFI engines and 96.7–98.8% in GDI engines. Fuel consumption tests were conducted according to GB / T 19233-2020, with fuel consumption reduction rates of 2.8–4.1% and 3.0–4.5% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to GB18352.6-2016, with particulate matter emission reduction rates of 40.2–48.4% and 38.8–40.7% for PFI and GDI engines, respectively. Experimental data are listed in Table 1.

[0048] Example 2

[0049] The detergent composition is formulated as follows:

[0050] The weight parts of each component are:

[0051]

[0052] The above components were weighed according to their respective weight proportions, mixed at 25°C, and stirred evenly to obtain the detergent composition of Example 2. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. The physicochemical analysis data of the gasoline all met the requirements of GB17930-2006. The reduction rate of intake valve deposits in simulated automotive engines according to GB / T19230.5 was 96.7–99.2% and 96.2–98.8% for PFI and GDI engines, respectively; the reduction rate of combustion chamber deposits in PFI and GDI engines was 98.4–99.5% and 97.9–99.7%, respectively. The reduction rate of fuel injector deposits in simulated automotive engines according to GB / T19230.3 was 97.8–98.8% and 97.0–99.2% for PFI and GDI engines, respectively. Fuel consumption tests were conducted according to GB / T 19233-2020, with fuel consumption reduction rates of 3.0–4.2% and 3.1–5.2% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to GB18352.6-2016, with particulate matter emission reduction rates of 42.3–50.4% and 39.0–43.2% for PFI and GDI engines, respectively. Experimental data are listed in Table 2.

[0053] Example 3

[0054] The detergent composition is formulated as follows:

[0055] The weight parts of each component are:

[0056]

[0057] The above components were weighed according to their respective weight proportions, mixed at 25°C, and stirred evenly to obtain the detergent composition of Example 3. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. The physicochemical analysis data of the gasoline all met the requirements of GB17930-2006. The simulated intake valve deposit reduction rate for automotive engines using GB / T19230.5 was 97.7–99.0% for PFI engines and 97.0–99.1% for GDI engines, according to GB / T19230.5. The combustion chamber deposit reduction rate for PFI and GDI engines was 98.4–99.8% and 97.9–99.7%, respectively. The simulated fuel injector deposit reduction rate for automotive engines using GB / T19230.3 was 97.8–99.6% for PFI engines and 97.7–99.4% for GDI engines. Fuel consumption tests were conducted according to the GB / T 19233-2020 method, with fuel consumption reduction rates of 3.5–4.7% and 3.9–5.2% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to the GB18352.6-2016 method, with particulate matter emission reduction rates of 44.3–49.9% and 40.7–42.0% for PFI and GDI engines, respectively. Experimental data are listed in Table 3.

[0058] Example 4

[0059] The detergent composition is formulated as follows:

[0060] The weight parts of each component are:

[0061]

[0062] The above components were weighed according to their respective weight proportions, mixed at 25°C, and stirred evenly to obtain the detergent composition of Example 4. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. The physicochemical analysis data of the gasoline all met the requirements of GB17930-2006. The simulated intake valve deposit reduction rate for automotive engines using GB / T19230.5 was 96.4–99.1% for PFI engines and 96.3–98.5% for GDI engines. The combustion chamber deposit reduction rate for PFI engines and GDI engines was 98.2–99.5% and 97.3–99.5%, respectively. The simulated fuel injector deposit reduction rate for automotive engines using GB / T19230.3 was 97.8–98.8% for PFI engines and 97.3–99.2% for GDI engines. Fuel consumption tests were conducted according to the GB / T 19233-2020 method, with fuel consumption reduction rates of 2.7–4.6% and 3.4–4.4% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to the GB18352.6-2016 method, with particulate matter emission reduction rates of 40.8–48.8% and 38.7–40.7% for PFI and GDI engines, respectively. Experimental data are listed in Table 4.

[0063] Example 5

[0064] The detergent composition is formulated as follows:

[0065] The weight parts of each component are:

[0066]

[0067] The above components were weighed according to their respective weight proportions, mixed at 25°C, and stirred evenly to obtain the detergent composition of Example 5. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. The physicochemical analysis data of the gasoline all met the requirements of GB17930-2006. The reduction rate of intake valve deposits in simulated automotive engines, according to the GB / T19230.5 method, was 96.4–98.8% and 96.0–98.6% in PFI and GDI engines, respectively. The reduction rate of combustion chamber deposits in PFI and GDI engines was 97.7–99.3% and 96.7–99.0%, respectively. The reduction rate of fuel injector deposits in simulated automotive engines, according to GB / T19230.3, was 97.0–98.4% for PFI and 96.5–98.4% for GDI engines. Fuel consumption tests, conducted according to GB / T 19233-2020, showed a reduction rate of 2.8–4.0% and 2.5–4.4% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emissions tests, conducted according to GB18352.6-2016, showed a reduction rate of 39.9–45.5% for PFI and 38.7–40.5% for GDI engines. The experimental data are listed in Table 5.

[0068] Comparative Example 1

[0069] The detergent composition is formulated as follows:

[0070] The weight parts of each component are:

[0071]

[0072] Weigh the above components according to their weight proportions, mix them at 25°C, and stir until homogeneous to obtain the detergent composition of Comparative Example 1. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. According to GB / T19230.5, the simulated intake valve deposit reduction rate for PFI and GDI engines was 95.5–98.4% and 95.3–97.9%, respectively; the combustion chamber deposit reduction rate was 95.0–98.9% and 93.2–96.6%, respectively, for PFI and GDI engines. According to GB / T19230.3, the simulated fuel injector deposit reduction rate was 93.9–96.4% and 94.9–97.6%, respectively, for PFI and GDI engines. Fuel consumption tests were conducted according to the GB / T19233-2020 method, with fuel consumption reduction rates of 2.0–3.1% and 2.3–3.8% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to the GB18352.6-2016 method, with particulate matter emission reduction rates of 35.5–37.1% and 34.9–37.7% for PFI and GDI engines, respectively. Experimental data are listed in Table 6.

[0073] Comparative Example 2

[0074] The detergent composition is formulated as follows:

[0075] The weight parts of each component are:

[0076]

[0077] Weigh the above components according to their weight proportions, mix them at 25°C, and stir until homogeneous to obtain the detergent composition of Comparative Example 2. This detergent was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. According to GB / T19230.5, the simulated intake valve deposit reduction rate for PFI and GDI engines was 94.5–96.3% and 94.4–96.1%, respectively; the combustion chamber deposit reduction rate was 97.0–98.9% and 96.1–98.8%, respectively, for PFI and GDI engines. According to GB / T19230.3, the simulated fuel injector deposit reduction rate was 95.4–97.5% for PFI and 95.0–96.5%, respectively, for GDI engines. Fuel consumption tests were conducted according to the GB / T19233-2020 method, with fuel consumption reduction rates of 2.5–3.9% and 2.9–4.1% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to the GB18352.6-2016 method, with particulate matter emission reduction rates of 32.9–36.7% and 32.1–34.3% for PFI and GDI engines, respectively. Experimental data are listed in Table 7.

[0078] Comparative Example 3

[0079] The detergent composition is formulated as follows:

[0080] The weight parts of each component are:

[0081]

[0082] Weigh the above components according to their respective weight proportions, mix them at 25°C, and stir until homogeneous to obtain the detergent composition of Comparative Example 3. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. According to GB / T19230.5, the simulated intake valve deposit reduction rate for PFI and GDI engines was 96.0–98.4% and 95.5–97.6%, respectively; the combustion chamber deposit reduction rate was 97.1–98.8% and 96.6–98.5%, respectively, for PFI and GDI engines. According to GB / T19230.3, the simulated fuel injector deposit reduction rate was 96.5–98.4% and 93.4–97.3%, respectively, for PFI and GDI engines. Fuel consumption tests were conducted according to the GB / T19233-2020 method, with fuel consumption reduction rates of 2.7–3.9% and 2.4–4.1% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to the GB18352.6-2016 method, with particulate matter emission reduction rates of 39.2–40.5% and 37.9–40.4% for PFI and GDI engines, respectively. Experimental data are listed in Table 8.

[0083] Comparative Example 4

[0084] The detergent composition is formulated as follows:

[0085] The weight parts of each component are:

[0086]

[0087] The above components were weighed according to their respective weight proportions, mixed at 25°C, and stirred evenly to obtain the detergent composition of Comparative Example 4. This detergent composition was added to commercially available 93# gasoline at six different dosages: 150ppm, 250ppm, 350ppm, 450ppm, 550ppm, and 650ppm. According to GB / T19230.5, the simulated intake valve deposit reduction rate for PFI and GDI engines was 95.8–98.5% and 95.7–98.0%, respectively; the combustion chamber deposit reduction rate was 97.3–98.3% and 96.2–98.5%, respectively, for PFI and GDI engines. According to GB / T19230.3, the simulated fuel injector deposit reduction rate was 96.7–98.1% and 96.3–98.0%, respectively, for PFI and GDI engines. Fuel consumption tests were conducted according to the GB / T19233-2020 method, with fuel consumption reduction rates of 2.6–3.7% and 3.0–4.2% per 100 kilometers for PFI and GDI engines, respectively. Particulate matter emission tests were conducted according to the GB18352.6-2016 method, with particulate matter emission reduction rates of 39.7–44.2% and 38.0–40.2% for PFI and GDI engines, respectively. Experimental data are listed in Table 9.

[0088] Table 1. Experimental results of the detergent composition of Example 1 on PFI and GDI engines.

[0089]

[0090] Table 2. Experimental results of the detergent composition of Example 2 on PFI and GDI engines.

[0091]

[0092] Table 3. Experimental results of the detergent composition in Example 3 on PFI and GDI engines.

[0093]

[0094] Table 4. Experimental results of the detergent composition of Example 4 on PFI and GDI engines.

[0095]

[0096] Table 5. Experimental results of the detergent composition of Example 5 on PFI and GDI engines.

[0097]

[0098] Table 6 shows the experimental results of the detergent composition in Comparative Example 1 on PFI and GDI engines.

[0099]

[0100] Table 7 shows the experimental results of the detergent composition in Comparative Example 2 on PFI and GDI engines.

[0101]

[0102] Table 8 shows the experimental results of the detergent composition in Comparative Example 3 on PFI and GDI engines.

[0103]

[0104] Table 9 shows the experimental results of the detergent composition in Comparative Example 4 on PFI and GDI engines.

[0105]

[0106] As can be seen from Examples 1, Comparative Examples 1-4, and Tables 1 and 6-9, compared to using polyisobutyleneamine, polyetheramine, and 3-aminomethyltetrahydrofuran alone, or in combination, as the main detergent agent, Example 1 of this invention uses a compound of polyisobutyleneamine, polyetheramine, and 3-aminomethyltetrahydrofuran as the main detergent agent. This combination can effectively remove carbon deposits and reduce sediment buildup even with very small dosages, and can also reduce fuel consumption and particulate matter emissions, thus achieving energy conservation and emission reduction. Furthermore, as can be seen from Examples 1, Examples 4-5, and Tables 1 and 4-5, the preferred dosage range of 3-aminomethyltetrahydrofuran in this invention is 75-300 parts by weight.

Claims

1. A detergent composition comprising polyisobutyleneamine, polyetheramine and 3-aminomethyltetrahydrofuran.

2. The detergent composition according to claim 1, characterized in that: The number average molecular weight of the polyisobutyleneamine is 500-50000, preferably 500-20000.

3. The detergent composition according to claim 1, characterized in that: The structural formula of the polyetheramine is as follows: Wherein, R is methyl or ethyl, x is 2-50, preferably 10-25, and y is 0-50, preferably 1-6.

4. The detergent composition according to any one of claims 1-3, characterized in that: Based on parts by weight, the amount of polyetheramine is 100-300 parts by weight relative to 100 parts by weight of polyisobutyleneamine, and the amount of 3-aminomethyltetrahydrofuran is 75-300 parts by weight; preferably, based on parts by weight, the amount of polyetheramine is 100-200 parts by weight relative to 100 parts by weight of polyisobutyleneamine, and the amount of 3-aminomethyltetrahydrofuran is 75-150 parts by weight.

5. The detergent composition according to claim 1, characterized in that: The detergent composition further comprises at least one of the following: polyether carrier oil, solvent oil, cosolvent, octane number improver, rust inhibitor, corrosion inhibitor, demulsifier, friction modifier, and combustion improver.

6. The detergent composition according to claim 5, characterized in that: The polyether-carrying oil is selected from at least one of polypropylene oxide, polybutene oxide, and copolymers of butene oxide and propylene oxide; and / or, The solvent oil is selected from at least one of gasoline and aromatics, preferably from at least one of gasoline and alkylbenzenes, and more preferably from at least one of gasoline, toluene, xylene, trimethylbenzene, and tetramethylbenzene; and / or, The co-solvent is selected from at least one of aromatic hydrocarbons and alkyl alcohols, preferably from at least one of benzene, alkylbenzene, ethanol, propanol, butanol, and isooctanol, more preferably from at least one of benzene, toluene, xylene, ethanol, propanol, butanol, and isooctanol; and / or, The octane number improver is selected from at least one of dimethyl carbonate, methyl furan, and diphenylamine; and / or, The rust inhibitor is selected from at least one of the following: heptadecyl imidazoline alkenyl succinate, 1,2,3-benzotriazole, alkenyl succinate, sorbitan monooleate, and dehydrated sorbitan fatty acid ester; and / or... The preservative is selected from at least one of benzotriazole derivatives and thiadiazole derivatives; and / or The demulsifier is selected from at least one of polyoxypropylene polyoxyethylene propylene glycol ether; and / or The combustion improver is selected from at least one metal oxide, preferably from at least one rare earth metal oxide.

7. The detergent composition according to any one of claims 5-6, characterized in that: Based on parts by weight, relative to 100 parts by weight of polyisobutyleneamine, the amount of the polyether-carrying oil is 5-300 parts by weight, the amount of the solvent oil is 5-200 parts by weight, the amount of the co-solvent is 5-200 parts by weight, the amount of the octane number improver is 1-50 parts by weight, the amount of the rust inhibitor is 1-30 parts by weight, the amount of the corrosion inhibitor is 1-20 parts by weight, the amount of the demulsifier is 1-15 parts by weight, the amount of the friction improver is 2-50 parts by weight, and the amount of the combustion improver is 1-30 parts by weight; preferably, based on... Based on parts by weight, relative to 100 parts by weight of polyisobutyleneamine, the amount of the polyether-carrying oil is 50-160 parts by weight, the amount of the solvent oil is 50-100 parts by weight, the amount of the co-solvent is 50-100 parts by weight, the amount of the octane number improver is 10-25 parts by weight, the amount of the rust inhibitor is 6-12 parts by weight, the amount of the corrosion inhibitor is 2.5-5 parts by weight, the amount of the demulsifier is 2.5-5 parts by weight, the amount of the friction improver is 15-30 parts by weight, and the amount of the combustion improver is 5-15 parts by weight.

8. A method for preparing a detergent composition according to any one of claims 1-7, comprising the step of mixing components including polyisobutyleneamine, polyetheramine, 3-aminomethyltetrahydrofuran and optionally polyether carrier oil, solvent oil, cosolvent, octane number improver, rust inhibitor, corrosion inhibitor, demulsifier, friction improver, and combustion improver.

9. The use of a detergent composition as described in any one of claims 1-7 or a detergent composition prepared by the method of claim 8 in fuel oil.

10. The application as described in claim 9, characterized in that: The detergent composition is added to fuel at a ratio of 50-2000 ppm, preferably at a ratio of 200-600 ppm.

Images